Finding the Fourth Proportional to 140,695.44, 194,162.16 and 86,979.12
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Solution
The fourth proportional to 140,695.44, 194,162.16 and 86,979.12 is: 120,032.70
Step by Step Solution
- Step 1: Write the proportion equation
140,695.44 : 194,162.16 = 86,979.12 : x - Step 2: Convert to fraction form
140,695.44/194,162.16 = 86,979.12/x - Step 3: Cross multiply
140,695.44x = 194,162.16 × 86,979.12 - Step 4: Simplify right side
140,695.44x = 16,888,053,814.10 - Step 5: Solve for x
x = 16,888,053,814.10/140,695.44 - Step 6: Final answer
x = 120,032.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.